Men taking any of three erectile dysfunction drugs -- Viagra, Levitra
or Cialis -- may be at increased risk for sudden hearing loss,
prompting Food and Drug Administration officials to require label
changes for the medications.

The FDA is requiring label changes for drugs that may increase the risk of sudden hearing loss. The FDA said manufacturers must change the labels "to display more
prominently the potential risk of sudden hearing loss," according to
the agency's Web site.

Labeling must also be changed for the
blood pressure medication Revatio, which has the same active ingredient
as the other drugs. Men taking any of the ED drugs and
experiencing hearing loss should immediately stop taking the drug and
see their physician, the FDA said. . .

The FDA is requiring the label change for the entire class of drugs -- called Phosphodiesterase Type 5 Inhibitor, or PD-5 inhibitors.